RS EQU P2.0

       RW EQU P2.1

       E EQU P2.2

       ORG 0080H

       MOV P0,#00000001B ;Clear display

       ACALL ENABLE

       MOV P0,#00000001B ;Clear display

       ACALL ENABLE

       MOV P0,#00111000B ;Display

     ACALL ENABLE

       MOV P0,#00001111B  ;Display control switch

      ACALL ENABLE

       MOV P0,#00000110B       ;Input mode

       ACALL ENABLE

       MOV P0,#0C0H          ;Data memory address

       ACALL ENABLE

       mov p0,#01000001b   ;ASCII Code

SETB RS

       CLR RW

       CLR E

       ACALL DELAY

       SETB E

       AJMP $

ENABLE: CLR RS                    ;Send orders

       CLR RW

       CLR E

       ACALL DELAY

       SETB E

       RET

DELAY: MOV P0,#0FFH

       CLR RS

       SETB RW

       CLR E

       NOP

       SETB E

       JB P0.7,DELAY           ;detect busy

       RET

       END

XL2000 running photo, (after the completion of the experiment, please remove all the JP41 jumpers)

The effect of running 12864ZIKU.HEX  in the CD.